Hot air apparatus



June 9, 1936.-

w. A. SPEAR HOT AIR APPARATUS Filed Dec. 5, 1932 Patented June 9, 1936PATENT OFFICE HOT AIR APPARATUS.

Walter A; Spear, Cincinnati, Ohio, assignor to Victor Electric Products,Inc Cincinnati, Ohio, a corporation of Ohio Application December 3,1932, Serial No. 645,573

5' Claims.

This invention relates .to, heating and ventilating apparatus and moreparticularly to the application of a motor fan to a hot air register orother air circulating conduit for augmenting the natural circulation of.air. 7

In the use of hot air heating systems for residences, wherein the air;is conducted through conduits and discharged into the room througheither floor or wall registers, it is not unusual for such conduits tobecome air, bound due to the presence of a body of relatively cold airove lying the warm air too heavy to be raised by the bouyancy of thewarmer air below, and so actingas a stopper for the conduit. 5

In the present invention there is contemplated an electric fan and aresilient. mounting upon which the fan issuspended atthe outlet of theconduit, by the-suction .eiiectoi which upon the conduit and theforcible expulsion of air-fin the vicinity of the register, the pressureof th cold air within the conduit is relieved andthc Warm air allowed torise. Furthermore, the fan ac celerates the circulation of Warm air,thereby efecting a; more rapid heat ex hange within. t e

room. r

- It is recognized that the use of a motor fanv for ac lerating hedistributi n of. warm air irom a register is not. br dly ew but in thepresent case th fan is advantageously located. and. sunported, in anewand novel manner;

The object of the invention. is to. improve the mounting as well as themeans and mode of op.- eration of su h air circulatin pnaratuswhere byit will not only be cheap in construction. b will be more efficient inusecanable of bein easily and'quic y installed. by unskilled personswithout the se of tools, substantially noiseless in operation, andunlikely to get out of repair.

A further objectoi the invention is to. provide means for mounting anelectric ian within aheating' r v nti atin cond it for acceleratingdischarge of air therefrom,

A further object of the'inventi-on is to provide a resilient mountingfor an electric fanadapted to be secured in pl y application to the.010- sure grille of a conduit or-passage; A-iurther object of theinventionis to provide amounting wherein the vibration of-theian andmotor are effectively dampened to ;minimize noise.

A further object, of the invention is to provide air control anddirecting means for the fan.

Withv the above primary. and other incidental objects; in. view, as willmore iully appear in the specification, the invent-ion.-consistsoithefeatures of construction, the parts, and combinations-thereof, and themode of operation, or their equivalents, asi.'.hereinaiter;described andset forth in the claims.

In the drawing, wherein is shown the preferred but obviously not necessai y t e nly f m of em odiment. cithe inv ntion. F u e 1 s. a erticalsectional view of a typical hot air floor regisher to whi h the nventionhas b n appli Ffisur isanc spective Vi w f. e fa an m un n emove ircmthre is er. Fi ure 3 is. a ide levation of a spe ia aptation. ci' hinvention to, a wall. re er wherein h r s n ufficient space to receivethe motor fan. Fig l is a front elevation of he const ction shown inFig. 3.

Like parts are indicated. by similar characters of, reference throughoutthe several views.

Referring to Figures .1 and, 2 of the drawing, l is the floor of. a.room having therein a typical floor register of which '2 ls-the registerbox. or chamber and .3 thelhot. air flue; leading thereto. Over theregister chamber is the usual closure. grille 4v through which heatedair isdischarged into. the room. Whilethe invention has been illustratedas applied tohct air registers, itis to be understood that it. is.equally applicable to, air circulating passagesor conduits other than.hot air heating installations. In an inverted p0 sition the apparatusmay be installed in a cold air 2.5 duct or flue to accelerate thewithdrawalof cold air from a room. It is also applicable to anyventilating opening, whether for the distribution of heated or cold airMounted within the floor register chamber 2 is a motor fan which forspecial installation or where commercial electric current is notavailable, may be actuated "by a spring motor, but is preferably anelectric motor 5 driving propeller -or fanblades 6. To support theelectric fan there is provided a supporting bar 1 extending'trans-"versely of the register chamber 2 with its ends resting-uponled cs atthe bottom of the register chamberand' the motor and fan suspended inthe conduit 3. This supporting bar 1 is medially bent'int a pendantbieht of sub tan ally hape, th n s 0.15 which are Qu urned. n P". posidirections formin a ms. .9 a b ant ally comm n p ane for suppor in engement b yondthe' wall of the hot air conduit ,3. The material of thebar is suflicientlyflexible that if too longv the ends may be bentupwardly to fit within the chamber 2,. Cushion sleeves l0 of rubbersurroundthe en aging portions of the arms and serve to dampen vibrationandso minimize noise. The supporting bar I is preferably of springmaterial and also dampens vibration and eliminates noise. The-m tor 5 isfi d ec r exte c ly to the medial portion of the dependent bight 8, prierablr, th ugh nctine essar y, by the bolts H w ich. also serv to scure the mo or housin 's-a cutsthe .nictcrlnar s... ..;'I.hc'-.1notoris. :thus in effect suspended from the bar I. The armature shaftprojects through a suitably positioned hole .arereversed so that the fanexerts a suction in the bar I andcarries the propeller or' fan blades 6'interiorly of the bight 8;

.Fixdly secured at diametrically opposite point r to the sides of thebight fl' in .approximately mid position between the bottom of the bightand the laterally outstretched arms 9 is a cylindrical ring jl3 of fiatstock peripherally surrounding the pro- 'peller or fan blades 6 andserving to confine the'f tip discharge of air therefrom and directingthe 1 discharged air axially toward and: through the grille 4 and alsobracingthe supporting bar I, The motor draws its'supply of air from theflue 3, thereby tending to establish and accelerate circulationtherethrough. The motor cable-can be disposed in the corner of thechamber 2 outside the frame carrying the'usual closure vanes for thegrille, and'extended outwardly beneath the :edgeof the grille.

' Sometimes registers are encountered wherein the registerchamberor'compartnient is of insufficient depth'to receive the motor fan. Suchconditions 'are lusually found in wall registers, but may exist also infloor registers. To meet such conditions of use,'and to'provide aportable apparatus applicable to either a floor or wall register'andreadily' transferable fromone to an- "other as occasion may require,such apparatus may be detachably engaged with the grille 4 exteriorly*of the register chamber as' is illustrated in Figure 3 In such caseithepropeller or 'fan' blades efiefct upon the register and dischargesoutwardly lover themotorp g n Referring'to Figure 3, the'motori ismounted upon the U shaped supporting bar-as before described and the fanblades 6 are enclosed'by the o ring: I3, butas before 'mentio'ned'thefan 6 is V v reversed and discharges toward the motor 5. The

' 'I-arms -9iof-;the supporting bar are attached by screwsjor :bolts 4to a baffle licommensurat'e'with the size'ofthe grille4, havingthereina'central opening 16 substantially agreeing" with the size of thering I 3 and through which the air is drawn fromthe register byrthegfan.- Mounted on the opposite side of the-baflle l5 by the. same screws7, l4 and, such additional means as may be necessary, are hanger fingersor clips H which are bent V outwardly, from the bafilefor engagement; inthe open'ingsrof the register'ggrilletosupport the ap- 'paratus thereon.The bafile covers the grille ex- ";cept the central portion within theopening l5 and prevents airbeing drawn into the register through thegrille, thus insuring ample suction upon the T air within [the hotairvflue. Toafiordprotection' not only. to, the motor and fan but alsoagainst injury thereby, a wire guard orca'gej I8 encloses the motorvfanaudits mountings. This guard cage is attached in any suitable, manner,pr r- V 7 erably'by smalliclamp clips secured by the same screws orbolts which secured certain of the hanger fingersll?" Fromthe abovedescription it will be apparent V that there isthus' provided a deviceof the character describe'dpossessing theparticular features Q 5 ofadvantage before enumerated as desirable, but

which obviously is susceptible of modification in l its form,proportions, detail construction and arrangement of parts 7 withoutdeparting from the principle involved or sacrificing a'ny of its'advantages; Q 7

V While in'order to comply with the statute, the

invention hasbeen described in language more or -less specific as tostructural features, it is to be preferred'formof several modes ofputting the inventioninto effect, and the invention is there- {iforeclaimed in any of its forms or modifications within the legitimatepended claims.

and validscope of the ap- Having thus describedmy invention, I claim; 7'1.;Air circulatory means for a hot air register having a conduit throughwhich hot airis supplied forjdistribution through'a closure grilletherefor, said means including the combination of an electrician to bemounted within the register conduit for discharge of air through the:

grille; with a mounting therefor including a resilient supporting barextending transversely of the, register conduit adapted to rest atopposite sides thereof independently of the .grille, -rubber sleevesenclosing the rested portions of 's'aid bar, 7 said bar'having' a medialU shaped bight' formed T therein to which the *motor of the electricianis ,7 attached, and a ring surrounding the propeller blades of theelectric fan and attached to the sides of the u shaped bight forconfining and directing the 'air discharged from thexpropeller bladesthrough the grille.-

2. Air circulatory means' for' a hot air register,

for distribution and a closure grille therefor, said means including-thecombination of an electric.

having a chamberto whichhotair is supplied:

fan -mounted 'for dischargefof air-through the;

portionsof the bar. 1

3. A mounting bracket for an e I eluding a ring of suflicient size tosurround the V grille with. a resilientsupporting bar for the electricfan adapted to extend transversely of the" register chamber with itsends "adapted to be supported at opposite sides ottheregistercham-f her,and" rubber sleeves enclosing the supported electric ffanin v V 40 fanblades, 'a transverse supporting-bar attached tojt he ring atdiametrically opposite points and having a medial bight engageable withthe motor of the electric fanbeyond the plane'of the ring,

the terminal ends of thesupporting bar being laterally-extended radiallywith respect tojthe ring and at the sidethereof oppositethe'motor v ifor engagement with a supporting structure}; a 4. A mounting bracket foran electric fan comprising a supporting bar bent intoa substantially Ushaped bight, theendsof whichare oppositely 'tumed in a; common plane,and adapted for the interconnection of the motor of anelectric fan tothe medial rtionof such bight, andaring;

attached to the sides of the bightin mid position between the bottom ofthe bight and the oppositely, turned ends, in' a positionto surround thefan blades'of' the electric fan.

*5. An air circulatory means for a hot air reg-r 'ister having a conduitthrough which hot air is V supplied for distribution and a closuregrilletherefor, said means including the combinationof an electricfanmounted for discharge of air through the grille, said fanhaving aring positioned about the propeller blades for confining and directingtoo" thedischarge of'air by the fan throughthe grille with a resilientbar-for the electric fan' adapted to extend transverselyofthe registerconduit with its ends adapted to'be supported at opposite sides of theregister conduit, and rubber snubber members contacting the supportedportionsof the bar.

' wAIQ'rERaserum}-

